S
M
T
W
T
F
S
26
99°
70°
27
102°
70°
28
102°
69°
29
97°
69°
30
99°
68°
31
102°
70°
1
101°
69°
2
100°
70°
3
102°
70°
4
102°
69°
5
101°
70°
6
101°
70°
7
100°
69°
8
101°
69°
9
102°
68°
10
101°
67°
11
95°
67°
12
96°
66°
13
96°
63°
14
95°
64°
15
95°
66°
16
96°
67°
17
99°
65°
18
99°
67°
19
100°
66°
20
98°
67°
21
95°
66°
22
93°
66°
23
94°
65°
24
94°
66°
25
95°
62°
26
93°
60°
27
92°
59°
28
93°
64°
29
93°
64°
30
94°
63°
31
94°
62°
1
95°
61°
2
94°
60°
3
95°
59°
4
92°
56°
5
91°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lancaster
Lancaster's August 2026 forecast shows daily high temperatures ranging from 91° to 102°, with overnight lows between 56° and 70°. The average high for August is 97° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Lancaster. See also: September | October | November.
